\begin{itemize}

 \item does not start on line does not start on line does not start on line oes
  not start aa a a a a a a a a a a a a a a a a a a a a a a a a a a a a aa a a a
  a a a a a a a a a a a a a a a a

  Recall Euler's formula for planar graphs, \(V+E-F=2\).
 \item
  starts on own line starts on own line starts on own line aa a a a a a a a a a
  a a a a a a a a a a a a a a a a a a a aa a a a a a a a a a a a a a a a a a a
  a
  \begin{itemize}

   \item Let \(G\) be a maximal planar graph; we wish to show that every
    drawing of \(G\) has only triangular faces (counting the ``unbounded'' face
    also as a triangle).

    Recall Euler's formula for planar graphs, \(V+E-F=2\).

  \end{itemize}

\end{itemize}
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